1285099 has 2 divisors, whose sum is σ = 1285100. Its totient is φ = 1285098.

The previous prime is 1285069. The next prime is 1285111. The reversal of 1285099 is 9905821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1285099 - 2⁷ = 1284971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1285049) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642549 + 642550.

It is an arithmetic number, because the mean of its divisors is an integer number (642550).

2^1285099 is an apocalyptic number.

1285099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285099 is an equidigital number, since it uses as much as digits as its factorization.

1285099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1285099 is about 1133.6220710625. The cubic root of 1285099 is about 108.7206888020.

The spelling of 1285099 in words is "one million, two hundred eighty-five thousand, ninety-nine".